调用invalidateViews()之后何时重新绘制项目？

我问是因为我尝试在bg线程通知下载了图像rsc之后刷新listItems.

但是没有任何更新.仅在退出并重新进入新图标之后才绘制.

我有一个带有SettingValueAdapter类型的适配器扩展BaseAdapter的活动

它有一个成员：

私有SettingsValue []值；

它有两种有趣的方法：

            @Override
            public View getView(int position, View view, ViewGroup parent) {

                AddressItem ai= (AddressItem)getItem(position);
                DriveToNativeManager dnm = DriveToNativeManager.getInstance();


                if (view == null) {
                    LayoutInflater li = (LayoutInflater)getSystemService(Context.LAYOUT_INFLATER_SERVICE);
                    view = li.inflate(R.layout.address_item, null);
                }

                view.setTag(R.id.addressItem,ai);
                view.setTag(position);
                view.findViewById(R.id.fullAddressItemCol).setVisibility(View.VISIBLE);
                view.findViewById(R.id.addressItemTouch).setVisibility(View.GONE);
                view.findViewById(R.id.addressItemImage).setVisibility(View.GONE);

                if (ai != null) {
                ...
    }
                    view.findViewById(R.id.addressItemIconLayout).setVisibility(View.VISIBLE);
                    Drawable icon = ResManager.GetSkinDrawable(ai.getIcon() + ".bin");
                    ((ImageView)view.findViewById(R.id.addressItemIcon)).setImageDrawable(icon);

                  ..
                    }
}


        public void refreshListIcons()  {


    //      NativeManager nativeManager = AppService.getNativeManager();
    //      SettingsValue[] values = new SettingsValue[categories.length];
    //      for (int i = 0; i < categories.length; i++) {
    //          values[i] = new SettingsValue(categories[i].value, nativeManager.getLanguageString(categories[i].displayString), false);
    //          values[i].icon = ResManager.GetSkinDrawable(categories[i].iconName + ".bin");
    //      }
    //      adapter.setValues(values);


            this.runOnUiThread(new Runnable() {

                @Override
                public void run() {
                    adapter.notifyDataSetChanged();         
                }
            });


    }   

我在bg-thread(c语言)图像下载过程中附加了一个回调.

回调将切换到ui线程并调用以下refreshList：

public void refreshSearchIconsOnSearchActivity() {

        Runnable refreshViewEvent = new Runnable() {
            @Override
            public void run() {
                Activity currentActivity = AppService.getActiveActivity();

                if (currentActivity instanceof SearchActivity) {

                    Log.d("w", "refreshSearchIconsOnSearchActivity callback running in thread "
                                    + Thread.currentThread().getId() );
                    //results list
                    ((SearchActivity) currentActivity).refreshList();

                }
            }
        };
        AppService.Post(refreshViewEvent);
    }

但是,图像已完成下载,并且不会在活动中刷新.

仅当我离开重新输入活动时,它们才会刷新.

我想念什么？

解决方法:

InvalidateViews只是使listView重绘自身.它不会调用getView这样做,它只是在屏幕上重置当前屏幕-基本上是

for(View child: getChildren()){
    child.invalidate();
}

如果要更新列表,请在适配器上调用notifyDataSetChanged.